Steam-boiler.



No. 683,859. Patented Out. I, I901.

V S. I]. MUTT.

STEAM emu-:3.

(Application filed Dec. 4, 1900.)

(No Model.)

VNITED STATES PATENT OFFICE.

SAMUEL D. MOTT, OF PASSAIO, NENV JERSEY, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO MOTORMOBILE COMPANY, OF JERSEY CITY, NEW JERSEY.

STEAM-BOILER.

$PEG1FIOAT1QN forming part of Letters Patent No. 683,859, dated October 1, 1901.

Application filed December 4, 1900. Serial No. 38,701. (No model.)

a steam-boiler which combines with a waterholding header or drum a series of connected coils, which are arranged so as to utilize to the utmost the heat from the burner placed below the coils, said tubes being coiled so that the maximum of heating-surface is contained in the minimum of space, to construct and arrange a superheat'er by which dry steam under high pressure can always be delivered from the boiler to the engine, to dispose the several parts so that as little heat as possible is wasted and so that the parts are all accessible, and in general to produce a practical and quick steaming boiler.

To these ends my invention consists of a steam-boiler the construction and organization of which will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar figures of reference refer to similar parts throughout the several views.

Figure 1 is a plan view of the boiler embodying my invention with the inclosing case removed. Fig. 2 is a sectional plan of the boiler. Fig. 3 is a vertical section of the boiler, and Fig. 4 is a side elevation of the boiler.

My invention comprises in part a header or drum 10, adapted to contain the water and to serve as areservoir for supplying the steamcoils. This drum or header may be suitably braced internally, as shown in Fig. 2, and have its back out in or recessed, as shown at 11 in ,Fig. 2, so that the assembled coils behind it may fit closely against the header and into the recess thus formed, to the end that the parts may be made compact and the heat utilized to the greatest extent. This water-drum and steam-chest may be cy= lindrical to make it stronger. The water to the header is supplied from a tank 12, the connections being through the pipes 13 and 14:, and this tank is supplied by a pipe 12. The means for feeding the water from the tank into the header or drum is not shown here, as this water-feeding device forms the subject of a separate application, which I have filed simultaneously with the filing of this case.

The whole drum is preferably inclosed in a suitable casing 15, which has for convenience a removable top 16. Within the main casing is an auxiliary casing 18, which incloses the coils 17 17. The pipes forming these coils are severally made into the greater and smaller loops 17 and 17 so that when the several coils are placed side by side in a vertical position their loops may interlock, as in Fig. 3, and all the coils be brought compactly above the burner, which will be hereinafter described. Each coil is connected at topand bottom to the upper and lower parts, respectively, of the drum or header 10, as the drawings clearly show. 1

Lying horizontal above the coils 17 17 is a superheater 19, which is formed in the shape of a rather close coil, the pipe being preferably of larger diameter than the coils 17 17*, and this superheater connects at one end with the upper part of the header or drum 10, as shown at 20 in Figs. 1 and 3, while the other end 21 may lead off to any desired point Where the steam is to be delivered. The superheater is supported on a bracket 22, and it and the several coils 17 17 are bound together by the cross-bar 23 at thetop and the U-bar 24, although any suitable means may be employed for the purpose. Besides the parts referred to the header has a suitable drain-pipe 25 and an auxiliary water supply pipe 26. (See Fig. 4:.)

It will be understood that an appropriate device can be used for forcing the water, if desired, from the header 10 into the coils and that when this is done the boiler is practically an instantaneous generator of steam and that the return to the header will be in the form of partially-condensed steam.

. Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A steam-boiler comprising a water-containing header, and a compound steam-coil arranged behind the header and connected to the header at its upper and lower end, the said coil being formed into a series of alternating loops of greater and less size.

2. A steam-boiler comprising a header having a recessed or concave back, and a steamcoil fitting within the said concave back and connected at its upper and lower ends to the header.

3. A steam-boiler comprising a header, and a series of grouped compound coils back of the header, the coils connecting at their up per and lower ends to the header, each coil comprisinga series of loops of greater and less size and the loops of the several coils being arranged to iutermesh.

4. A steam-boiler comprising a header having a recessed or concave back, and a group or series of coils arranged behind the header and partly in the said concavity, the terminals of the coils connecting to the upper and lower parts of the header.

5. A steam-boiler comprising a header,co1n pound coils connected to the upper and lower parts thereof, and a superheater lying above the coils and arranged to take steam from the upper part of the header.

6. The combination with the header and the compound coils connected therewith, of the superheater connected to the upper part of the header and comprising a pipe formed into a coil which lies upon the first-mentioned coils.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SAMUEL l). MOTT.

\Vitnesses:

JOHN I). GRIFFEN, W. B. IIU'rcHINsoN. 

